]> CyberLeo.Net >> Repos - FreeBSD/releng/9.2.git/blob - sys/ofed/include/linux/mlx4/cq.h
- Copy stable/9 to releng/9.2 as part of the 9.2-RELEASE cycle.
[FreeBSD/releng/9.2.git] / sys / ofed / include / linux / mlx4 / cq.h
1 /*
2  * Copyright (c) 2007 Cisco Systems, Inc.  All rights reserved.
3  *
4  * This software is available to you under a choice of one of two
5  * licenses.  You may choose to be licensed under the terms of the GNU
6  * General Public License (GPL) Version 2, available from the file
7  * COPYING in the main directory of this source tree, or the
8  * OpenIB.org BSD license below:
9  *
10  *     Redistribution and use in source and binary forms, with or
11  *     without modification, are permitted provided that the following
12  *     conditions are met:
13  *
14  *      - Redistributions of source code must retain the above
15  *        copyright notice, this list of conditions and the following
16  *        disclaimer.
17  *
18  *      - Redistributions in binary form must reproduce the above
19  *        copyright notice, this list of conditions and the following
20  *        disclaimer in the documentation and/or other materials
21  *        provided with the distribution.
22  *
23  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
24  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
25  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
26  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
27  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
28  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
29  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
30  * SOFTWARE.
31  */
32
33 #ifndef MLX4_CQ_H
34 #define MLX4_CQ_H
35
36 #include <linux/types.h>
37
38 #include <linux/mlx4/device.h>
39 #include <linux/mlx4/doorbell.h>
40
41 struct mlx4_cqe {
42         __be32                  vlan_my_qpn;
43         __be32                  immed_rss_invalid;
44         __be32                  g_mlpath_rqpn;
45         __be16                  sl_vid;
46         __be16                  rlid;
47         __be16                  status;
48         u8                      ipv6_ext_mask;
49         u8                      badfcs_enc;
50         __be32                  byte_cnt;
51         __be16                  wqe_index;
52         __be16                  checksum;
53         u8                      reserved[3];
54         u8                      owner_sr_opcode;
55 };
56
57 struct mlx4_err_cqe {
58         __be32                  my_qpn;
59         u32                     reserved1[5];
60         __be16                  wqe_index;
61         u8                      vendor_err_syndrome;
62         u8                      syndrome;
63         u8                      reserved2[3];
64         u8                      owner_sr_opcode;
65 };
66
67 enum {
68         MLX4_CQE_VLAN_PRESENT_MASK      = 1 << 29,
69         MLX4_CQE_QPN_MASK               = 0xffffff,
70 };
71
72 enum {
73         MLX4_CQE_OWNER_MASK     = 0x80,
74         MLX4_CQE_IS_SEND_MASK   = 0x40,
75         MLX4_CQE_OPCODE_MASK    = 0x1f
76 };
77
78 enum {
79         MLX4_CQE_SYNDROME_LOCAL_LENGTH_ERR              = 0x01,
80         MLX4_CQE_SYNDROME_LOCAL_QP_OP_ERR               = 0x02,
81         MLX4_CQE_SYNDROME_LOCAL_PROT_ERR                = 0x04,
82         MLX4_CQE_SYNDROME_WR_FLUSH_ERR                  = 0x05,
83         MLX4_CQE_SYNDROME_MW_BIND_ERR                   = 0x06,
84         MLX4_CQE_SYNDROME_BAD_RESP_ERR                  = 0x10,
85         MLX4_CQE_SYNDROME_LOCAL_ACCESS_ERR              = 0x11,
86         MLX4_CQE_SYNDROME_REMOTE_INVAL_REQ_ERR          = 0x12,
87         MLX4_CQE_SYNDROME_REMOTE_ACCESS_ERR             = 0x13,
88         MLX4_CQE_SYNDROME_REMOTE_OP_ERR                 = 0x14,
89         MLX4_CQE_SYNDROME_TRANSPORT_RETRY_EXC_ERR       = 0x15,
90         MLX4_CQE_SYNDROME_RNR_RETRY_EXC_ERR             = 0x16,
91         MLX4_CQE_SYNDROME_REMOTE_ABORTED_ERR            = 0x22,
92 };
93
94 enum {
95         MLX4_CQE_STATUS_IPV4            = 1 << 6,
96         MLX4_CQE_STATUS_IPV4F           = 1 << 7,
97         MLX4_CQE_STATUS_IPV6            = 1 << 8,
98         MLX4_CQE_STATUS_IPV4OPT         = 1 << 9,
99         MLX4_CQE_STATUS_TCP             = 1 << 10,
100         MLX4_CQE_STATUS_UDP             = 1 << 11,
101         MLX4_CQE_STATUS_IPOK            = 1 << 12,
102 };
103
104 enum {
105         MLX4_CQE_LLC                     = 1,
106         MLX4_CQE_SNAP                    = 1 << 1,
107         MLX4_CQE_BAD_FCS                 = 1 << 4,
108 };
109
110 static inline void mlx4_cq_arm(struct mlx4_cq *cq, u32 cmd,
111                                void __iomem *uar_page,
112                                spinlock_t *doorbell_lock)
113 {
114         __be32 doorbell[2];
115         u32 sn;
116         u32 ci;
117
118         sn = cq->arm_sn & 3;
119         ci = cq->cons_index & 0xffffff;
120
121         *cq->arm_db = cpu_to_be32(sn << 28 | cmd | ci);
122
123         /*
124          * Make sure that the doorbell record in host memory is
125          * written before ringing the doorbell via PCI MMIO.
126          */
127         wmb();
128
129         doorbell[0] = cpu_to_be32(sn << 28 | cmd | cq->cqn);
130         doorbell[1] = cpu_to_be32(ci);
131
132         mlx4_write64(doorbell, uar_page + MLX4_CQ_DOORBELL, doorbell_lock);
133 }
134
135 static inline void mlx4_cq_set_ci(struct mlx4_cq *cq)
136 {
137         *cq->set_ci_db = cpu_to_be32(cq->cons_index & 0xffffff);
138 }
139
140 enum {
141         MLX4_CQ_DB_REQ_NOT_SOL          = 1 << 24,
142         MLX4_CQ_DB_REQ_NOT              = 2 << 24
143 };
144
145 int mlx4_cq_modify(struct mlx4_dev *dev, struct mlx4_cq *cq,
146                    u16 count, u16 period);
147 int mlx4_cq_resize(struct mlx4_dev *dev, struct mlx4_cq *cq,
148                    int entries, struct mlx4_mtt *mtt);
149
150 #endif /* MLX4_CQ_H */